The seventieth Minnesota Legislature first convened on January 4, 1977. The 67 members of the Minnesota Senate and the 134 members of the Minnesota House of Representatives were elected during the General Election of November 2, 1976. It was the first Minnesota Legislature since the thirty-eighth Minnesota Legislature whose members of the Minnesota Senate were chosen in partisan elections.

The legislature met in a regular session from January 4, 1977 to May 23, 1977. A continuation of the regular session was held between January 17, 1978 and March 24, 1978. There were no special sessions of the 70th Legislature.

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